Chet Posted February 28 Share Posted February 28 1 hour ago, Norvic said: PS.... have weakened and have a 14x9 Goldhawk for 6K on the way, would prefer a round spiral of similar weight, perhaps Chet you can assist and advise whether wrecking a flogged ML 11, retrieve chip and make a patch cable so as I can use an EVO spiral is the go to solve this dilema. ..... The cable and chip module that I salvaged is from a used GPX 17”x13” coil. The graphite coil shielding has a separate ground/drain wire. I haven’t been able to use it with a standard GPX 5000 coil because the ground/drain wire is internally connected to the mono cable coax shield. Also the GPX 6000 appears to be finicky if the inductance, capacitance and resistance are not just right. I don’t know if the 11” ID chip would signal the control box to expect some different coil specifications. A few days ago I salvaged the cable and module from a defective GPX 6000 14” Double D coil. I have wired it up to a standard 5 pin connector to adapt to the X-Coil connectors. I also rewired a ML GPX 5000 Commander 11” DD coil to the same pin connections as the X-Coils. In testing there are no coil faults and it appears to be working. But with both a GPZ 14 coil and the modified 11” DD coil there is very low sensitivity. I will do some troubleshooting to find out what is wrong. Link to comment Share on other sites More sharing options...
Norvic Posted February 29 Share Posted February 29 1 hour ago, Chet said: The cable and chip module that I salvaged is from a used GPX 17”x13” coil. The graphite coil shielding has a separate ground/drain wire. I haven’t been able to use it with a standard GPX 5000 coil because the ground/drain wire is internally connected to the mono cable coax shield. Also the GPX 6000 appears to be finicky if the inductance, capacitance and resistance are not just right. I don’t know if the 11” ID chip would signal the control box to expect some different coil specifications. A few days ago I salvaged the cable and module from a defective GPX 6000 14” Double D coil. I have wired it up to a standard 5 pin connector to adapt to the X-Coil connectors. I also rewired a ML GPX 5000 Commander 11” DD coil to the same pin connections as the X-Coils. In testing there are no coil faults and it appears to be working. But with both a GPZ 14 coil and the modified 11” DD coil there is very low sensitivity. I will do some troubleshooting to find out what is wrong. Thank you for this info, much valued as it is helping this electronic layman get the courage up to av a go, and why no? can only let the smoke out.. 😉 Link to comment Share on other sites More sharing options...
Chet Posted February 29 Author Share Posted February 29 24 minutes ago, Norvic said: Thank you for this info, much valued as it is helping this electronic layman get the courage up to av a go, and why no? can only let the smoke out.. 😉 If you do, outside with lots of fresh air. lol Attached are some photos; Link to comment Share on other sites More sharing options...
phrunt Posted February 29 Share Posted February 29 You can turn that chip into a nice adapter, such as the one X-coils made here for testing prototype coils. Link to comment Share on other sites More sharing options...
Chet Posted February 29 Author Share Posted February 29 If you look closely at the photo with the green toothpick; the bare wire that is looped back into the white plastic goop is the shield/ground wire. It should have been connected to the graphite shield inside the coil housing. They may have had a new employee or some accident in assembly of the coil? It resulted in a noisy and ground sensitive coil. Link to comment Share on other sites More sharing options...
Chet Posted February 29 Author Share Posted February 29 28 minutes ago, phrunt said: You can turn that chip into a nice adapter, such as the one X-coils made here for testing prototype coils. The chip is embedded in epoxy so I am worried about damaging it with heat and/or tools to remove it. I don't want to sacrifice another coil if I mess-up. And additional coil cable for additional coils is hard to come by. Link to comment Share on other sites More sharing options...
phrunt Posted February 29 Share Posted February 29 You can buy the 6000 coil cables from China Applicable to metal detector: gpz7000 sdc2300 gold monster 1000 (aliexpress.com) The 7th item across on the list. Link to comment Share on other sites More sharing options...
Norvic Posted February 29 Share Posted February 29 Ah ha the green 'stick' mystery, will go with care when removing chip to see if perhaps there lays the cause of the intermittent 'craziness' my ML 11 developed. A X coil type cable adapter is the go, spiral coil improvement performance like the older GPXs and X gave the Z for the 6K may be possible. Link to comment Share on other sites More sharing options...
Chet Posted February 29 Author Share Posted February 29 15 minutes ago, phrunt said: You can buy the 6000 coil cables from China Thank you this source will help a lot on some of my projects. Link to comment Share on other sites More sharing options...
phrunt Posted February 29 Share Posted February 29 1 minute ago, Chet said: Thank you this source will help a lot on some of my projects. He also sells GPZ cables and so on, I've bought a fair bit of stuff from him. Link to comment Share on other sites More sharing options...
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